Shock absorber



March 7, 1933. GITZENDANNER 1,900,497

SHOCK ABSORBER Filed Nov. 5, 1950 36 35 -3 Fix-n INVENTOR. fled Gf/zen dann er ATTORNEY.

Patented Mar. 7, 1 933 Q i I V i v i V srars Ar 3 rnnn GITZENDANNER, or ivnw YORK, N. Y.

SHOCK ABSORBER Application filed. November 3, 1930. Serial No. 492,911.

The invention relates to shock absorbers tened to the chassis frame and on top of this for automobiles and similar vehicles and has blocka leaf spring 24 is secured by bolts 25.

for its main object to provide a device having The other end of this spring is secured to a greater eficiency than those now in use. Anpin 2.6 which is insertedin the upper, bifurother object is to provide a shock absorber cated end of the link 22. Thepressure of 55 which can be readily regulated to the load the spring is in the direction indicated by the of the automobile, as well as to the'condition arrow and can be adjusted by theadjusting of the road over which it is traveling. A screw 27- which is carried by a second block further object is to provide a device which 28, also secured on the chassis frame. 10 can be readily adapted to any make of autoin Figs. 3and 1, a double-armed bell crank mobile and which, owing to its strong and 29 takes the place of the bell crank shown simple construction, will give service over a in Figs. 1 and 2; A ball 30, which engages long period of time and which can still be 'in the universal joint in the connecting link manufactured a relatively low price. 17, is formed onthe long arm of the bell These and other objects'and advantages crank. The otherarms 31 and 32 are conwill be readily understood from the follownected to the bifurcated links 33 and 34. ing description and from the accompanying These arms and links, as will be readily drawing of preferred embodiments of the understood form two toggle links. A housinvention, however certain modifications ing 35, which securely attached to the may be made without departing from the chassis frame, contains a U shaped leaf 7 scope of the invention. In the drawing spring 36 and is provided with an opening Fi 1 18 a side elevation Sl1OWlI1 an em- 37 in which the ion arm of the bell crank c bodiment employing a single toggle link, operates. In F 1g.3the cover 38 has been re- F. 2 is a rear view of same taken on line moved from the housin The s rin is sew b p 45 22, cured to the housing by a bolt 39, 1ts ends .5

Fig. 3 is a side elevation showing an emare secured to pins to and 41 which are inbodiment employing a double toggle link, 7 serted in the bifurcated ends ofthe links Fig. 4 a rear view of same taken on lines 33'and 34, and the pressure ofthe spring is H. in the directions indicated by the arrows.

' In all the views, the standard chassis frame The functionsof the shock absorber will 80 of an automobile is shown at 10, the spring now be explained. Reference is first had to at 11, rear axle at 12, and the shackle-bolts Figs. 1 and 2. It will be seen that ifjon e of at 13. Each of the views also show a lever the wheels of the car to which the device is 14: which is secured on the rear axle by one attached receive a jolt, as for example from of the shackle-bolts. Each of these levers an uneven road, the rear axle 12, andcon- 85 has a rearwardly and outwardly extending sequent-1y the connecting link 17, tends to arm 15 which terminates in a ball 16 which raise against thetension of the main spring 11. forms part of a universal joint provided in This raising of the connecting link causes the one end of a connecting link 17. The other bell crank 19 to turn and break toggle which ends of these links are also provided with is formed ofthe members 21 and 22. While universal joints. the toggle is in its straight, or what may be Referring now to Figs. 1 and 2, abearing termed its locked position, the spring 24; is 18 is secured to the chassis frame and on this neutral, but, when the toggle is broken, the W bearing a bell crank 19 is mounted. One tension of the spring is'thrown into action. end of this bell crank terminates in a ball It acts on the main spring in the. same direc- 20 which engages in the upper universal joint tion as did the jolt. However, as the main of the connecting link 17 while the other spring starts to resume its original position, end 21 is connected to the bifurcated link 22. the sprin 24: retards it and causes it to asn The end 21 and the link 22 together form a sumev this position slowly and gradually,

toggle link. A block 23 is also securely fasthus reducing thejar which would otherwise be imparted to the chassis and the body mounted thereon. By adjusting the screw 27 the tension of the spring 24 may be increased or decreased. 7

The action of the embodiment shown in Figs. 3 and 4 is similar to what has just been described. The breaking of the double toggles actuates the spring 36 in the same manner that the breaking of the single toggle in 1 'Fig. 1 actuates the spring 24.

Having described my invention, what I claim as new and wish to protect by Letters Patent is:

1. In combination with a chassis frame having a spring supported axle, a cantilever spring attached to said chassis frame, a link connected with and actuated by said axle, a series of levers connecting said link with the free end of the cantilever and normally locking it in a neutral position, the construction of the levers being such as to free the end of the cantilever when the distance between the chassis frame and the axle is varied from normal.

2. In combination with a chassis frame having a spring supported axle, a double cantilever, spring attached to said chassis frame, a link connected with and actuated bysaid axle, a series of levers connecting said link with the free ends of the double cantilever spring and normally locking them in a neutral position, the construction of the levers being such as to release the ends of the double cantilever spring when the distance between the chassis frame and the axle is Varied from normal.

3. In combination with a chassis frame having a spring supported axle, a cantilever spring attached to said chassis frame, means for adjusting the tension of said cantilever spring, a link connected with and actuated by said axle, a series of levers connecting said link with the free end of the cantilever spring and normally looking it in aneutral position, the construction of the levers being such as to free the end of the cantilever spring when the distance between the chassis frame and the axle is varied from normal.

4. In combination with a chassis frame having a spring supported axle, a double cantilever spring attached to said chassis frame and contained within a closed housing, a link connected with and actuated by said axle, a series of levers connecting'said link with the free ends of the double cantilever spring and normally locking them in a neutral position, the construction of the levers being such as to release the ends of the double cantilever spring when the distance between the chassis frame and the axle is varied from normal.

FRED GITZENDANNER. 

